Waste Water Engineering If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is 150 ppm 100 ppm 200 ppm 50 ppm 150 ppm 100 ppm 200 ppm 50 ppm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The spacing of bars of perforations of fine screens used for the treatment of sewage, is 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm 2 to 3 mm 5 to 8 mm 8 to 10 mm 3 to 5 mm ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Water content of sewage is about 0.99 0.9 0.999 0.95 0.99 0.9 0.999 0.95 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Depletion of ozone layer in the outer atmosphere may cause Heart disorder Skin cancer Lung cancer Bronchitis Heart disorder Skin cancer Lung cancer Bronchitis ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Sulphuric acid Citric acid Hydrochloric acid Nitric acid Sulphuric acid Citric acid Hydrochloric acid Nitric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering 1000 kg of sewage contains 0.112 kg in solution Both A and C of above 0.225 kg in solution 0.112 kg in suspension 0.112 kg in solution Both A and C of above 0.225 kg in solution 0.112 kg in suspension ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS